I have received the same message from the Update installer, and, having followed the instructions in this thread to open a Command Prompt, I ran sc query winmgmt and it returned the correct responses - but the Installer still returns the same "unsupported" message.

The system is running W7 Ultimate 64 bit, and the Update Generator worked OK before I ran the Installer.

Any suggestions as to what to do next?

PS: I also downloaded the WMI diagnostics programme and took a look at the Instructions document - but I don't think I would have much luck in following the instructions and correcting any reported errors!

Please manually run .\client\cmd\DetermineSystemProperties.vbs and post the content of WOUSystemProperties.txt (saved to your desktop) here. Also please post a screenshot of any possible error message here.